Like the MTV reality series it was spun off from, The Real Cancun takes a bunch of self-obsessed young adults, throws them into one house and prods them into behaving as if they were at a junior-high dance. That no one survives with a shred of dignity shouldn’t come as a surprise. These are kids behaving stupidly on spring break – as kids should be allowed to do – only with a pandering movie crew around to record their every inane moment.